2188671

Information

• Patent Grant
• 2188671

• References
• Source

• Patent Number

  2,188,671

• Date Filed

  Not available

• Date Issued

  Tuesday, January 30, 1940
  85 years ago

• CPC

  • H04B3/12 - in negative-feedback path of line amplifier
  • H03F1/36 - in discharge-tube amplifiers
  • H03G1/0041 - using thermistors
  • H03G3/08 - incorporating negative feedback

• US Classifications

  • 330 - Amplifiers
  • 333 - Wave transmission lines and networks